Adjustable stop pin for routers



June 1l, 1935.` c, Lv, `WH|TE AL 2,004,738

ADJUSTABLE STOP PIN FOR ROUTERS Filed Dec. 23, 1935 Patented June 11,1935 y' I `UNITEnYfsnrii'i"151s PATENT oFFIcEf- AADJUSTABLE' STOP PINFOR ROUTERS Charles L. White, ThomasvillaN. C., and Gustave T. JohnsonBeloit, Wis., assgnors4 to Yates-g American Machine Company,v Beloit,Wis., a corporation of Delaware vApplication December 23, 1933', SerialNo. 703,698

" 5 claims. (o1. nii- 145) This invention has to do with wood workingbolt I 3 with a special rectangular wedge head machines of the typeknown as routers, and is I4, a rectangular wedge block I5, acylindrical`- particularly concerned with the mea'ns employed guidecollar IG, a nut I'I, and an adjusting screwrv insuch machines forguiding the pattern with I8 with al knurled Iingerwheel IS.

respect to the cutter when the machine is being The disk I2 is seatedlinV a circular aperture '5 used as a Shaper. 20 in the table Ill, withthe top of the disk flush Heretofore it has been the practice to equipwith the top of the table, vand with the center routers with a xed guidepin for this purpose, of the disk directly beneath the center of the thepink being mounted on the table of the maspindle 2l for the shapingcutter 22. The disk chine in alignment with the axisof the cutter, I2 issupported in the aperture 20 by mea-ns ofv 10 y where it is intended toserve as a stop against a small annular shoulder 23 on the edge of` thewhich the edge of the shaping pattern is guided. disk which rests upon acorrespondingly shaped- This fixed pin arrangement has not beenenannular shoulderl 24 in the *edge of*4 thel apertirely satisfactory,however, and has resulted in ture. The disk is-provided with-aslot 25whichl5 a rather high maintenance expense for the cutextendsdiametrically through the disk from 15 ters and the patterns, due partlyto the differone edge to a point closely adjacent the other ences in thediameters of the cutters used and edge. This slot permits the disk to beexalso in some instances to the performance of panded into firmlyclutched engagement with shaping operations on oversize work. theaperture in the table, while the spaced par- The object of the presentinvention is to proallel edges 26 of the slot constitute gibbed waysy 20vide an improved form of pattern guiding means for the support andmovement of certain rof which can be readily adjusted to compensate 'forthe other parts of the assembly. The upper all the variable factors metwith in connection and lower portions of the edges 26 of the slot withthe operation of a shaper and which will are beveled to conformrespectively with' the result in a substantial reduction in themaintewedge shaped portions of the-block I5 and bolt k25 nance expensefor the cutters and patterns. head I4.

The improved pattern guiding means consists t The bolt I3 extendsupwardly through the of a pin which is movable radially ci a disk, slot25, with the wedge portions of the head I4 which disk is set into anaperture inthe top of of the bolt in engagement with the lower bev- 30the table of the router and is movable about its eled edge portions ofthe slot. The block I5, 30 own axis, in combination with means forlockwhich is apertured, ts over the bolt I3 in ing both the pin and thedisk in any desired wedged engagement with the upper beveled position ofadjustment. edge portions of the slot. The guide collar I6 While theforegoing statements are indicative is mounted on the bolt I3 above theblocky I5,

of the nature of the invention, other objects and and the nut Il isscrewed down on the upper 35v advantages will be apparent to thoseskilled in threaded end of the bolt in engagement with l the art upon afull understanding Aof the conthe collar. t struction, arrangement andoperation of the The adjusting screw 4I8 is positioned horizonimprovedguiding means. tally in the center of the slot 25 and is thread- 40 Apreferred embodiment of the invention is ed through a threaded aperture21 in thel head 40 presented herein for the purpose of exemplifica- I4of the bolt. The screw I8 is provided at lone tion, but it will ofcourse be appreciated that end with a plain shank portion 28 which isjourthe invention is capable of embodiment in other naled inl anaperture 29 formed in the narrow structurally modified forms comingequally withbridge portion 3G of the disk. The screw isin the scope ofthe appended claims. held against endwise movement by having the 45 Inthe accompanying drawing: end 3l thereof upset. The linger wheel I9 isFig. 1 iS a DGTSIJBCVG VeW 0f the 11131361 DOI- mounted on the screw inan enlarged portion tion of a router, showing the table of the router 32of the slot 25 at the closed end of the latter.

equipped with the improved pattern guide; In order to change theposition of the guide Fig. 2 is a plan View of the guide; and collar I6,it is merely necessary to loosen the nut V50 Fig. 3 is a sectional viewof the guide, taken I'I,whereupon the finger wheel I9 can be rotated onthe line 3--3 of Fig. 2. to cause the collar I6 to travel longitudinallyof The improved guide, which is shown in Fig. the slot 25, and the diskI2, with all of the parts 1 mounted .in the work-supporting table I0 ofcarried by the same, can also be turned as a unit a router Il, includesa flat circular `disk I2, a if desired, to eiect a further compoundadjustment. One off-center position of adjustment for the collar I6 isshown in dotted lines in Fig. 2. vTo lock all the parts in any positionof adjustment, it is merely necessary to tighten up the nut l1 again.

We claim:

1. -In a` wood working machine, the combination with a work-supportingtable, and a shaping cutter above the table, of la disk rotatablymounted in an aperture in the table, a pin movable radiallyof the disk,and means for locking the pin and disk against movement in any positionof adjustment. A

2. In a wood working machine, the combination with a Work-supportingtable, and a shaping cutter above the table, of a disk seated in anaperture in the table and provided with a slot which extendsdiametrically of the disk from one edge to a point adjacent the oppositeedge, a Wedge positioned in the slot for expanding the diskinto clutchedengagement kwith the edge of the aperture, ya guide mounted on thewedge, means for adjusting `the position ofv the wedge longitudinally ofthe slot, andmeans for tighte'ningnthewedge to lock the disk and guidein any'desired position of adjustment.

3. In a wood working machine, the combination with a work-supportingtable, and a shaping cutter` above the table, of a disk seated Vin anaperture in the table and provided with a slot which extendsdiametrically vof the disk from one edge to a point adjacent theopposite edge, a bolt extending upwardly through the slot and providedat( its lower end with a wedge-shaped mounted on the bolt, a nut on thebolt above the collar, an adjusting screw journaled in the disk l' atone end of the slot in threaded engagement with the head of the bolt,and a knurled nger wheel on the screw for rotating the latter to j movethe bolt andthe other parts longitudinally of the slot.

4.1In a woodworking machine, the combinav tion with a Work-supportingtable, and a Acutter above the tab1e,rof a guide on the table beneathvthe cutter, any adjusting screw connected with the guide beneath theupper surface of the table for moving the guide into any one of severalpositions with respect to the cutter, and a finger Vwheel Yon the screwbeneath the upper surface of the table for `rotating the screw tomovethe guide. ,l

5. In a wood working machine,Y the combina-i tion with a work-supportingtable, anda cutter above the table, of a guide on the 'tablegbeneaththecutter, an adjusting screw connected with the guide beneath the uppersurface of the table for moving the guide into any one of severalpositions with respect jto the cutter, a nger wheel on the screwjbeneath the upper surface of thetable for rrotating the screw `to movethe f guide, and means, for locking theguide against movement in anyposition.

o CHAs. L. WHITE.

v GUSTAVE TQJOHNSON.

